Batt Insulation Installation
Fiberglass and rockwool batts for open walls, floors, and basements — fitted to fill the cavity completely, with air sealing done first.
Batts are pre-cut blankets of insulation for open framing: walls during a remodel, basement walls, floors over garages and crawl areas, and interior walls where you want quiet. We install two batt materials:
- Fiberglass batts — made from recycled glass and molten sand. The standard for most open-cavity work.
- Rockwool (mineral wool) batts — made from volcanic rock and slag. More fire- and water-resistant, and noticeably better at cutting noise between rooms.
Fit is everything
A batt only delivers its rated R-value when it fills the cavity completely — no compression, no gaps around wiring and boxes, no voids at the edges. We cut and fit each batt to the bay rather than stuffing it in, because a well-installed batt and a poorly installed one look the same behind drywall but perform very differently.
Batts for soundproofing
Adding standard fiberglass or mineral wool insulation into an empty interior wall cavity typically increases the wall's rating by 5 to 10 STC points — and a 10-point STC increase represents a 50% perceived reduction in noise to the human ear (Construction Technology Update 66). If you share a wall with a laundry room, home office, or noisy teenager, insulated interior walls are one of the most cost-effective fixes available.
Where batts fit your project
Most of Utah requires walls at R-20 to R-20 plus 5 of continuous insulation, floors at R-30, and basement walls at R-15 continuous or R-19 cavity. At your free estimate we'll tell you which assemblies in your home are candidates for batts and where blown-in or drill-and-fill is the better tool.
We don't install spray foam — if your project genuinely calls for it, we'll refer you to trusted spray foam specialists.